Samurai Champloo is no ordinary samurai story. It's a perfect mixture of the historical and the modern. You follow the path of Fuu, a spunky 15 year old girl on the search for a samurai who smells of sunflowers. She manages to drag along two samurai, Mugen and Jin, who have very different personalities and styles.
I rated Samurai Champloo a 10 because it truly is the best of its kind. The mixture of characters, story, animation and music; the final outcome is unexpected, thrilling and beautiful.
The music is the most unexpected element of this series. It's a mix of hiphop and jazz (Produced by the late DJ Nujabes and American MC Fat Jon) that compliments the series extremely well.
Both the sub and the dub are excellent. Some episodes tend to be more entertaining in Japanese since some characters speak "engrish".

This is a samurai story, of course there's going to be violence. It's not terribly gory, but still bloody enough to warrant a caution. Swords slicing and sticking into people is the extreme extent.

The nudity/sexual content of Samurai Champloo does deserve quite a bit of caution. It should be noted I don't consider the nudity of this series to be fan-service, but put there more for historical fact sake. Either way, you're going to see quite a bit of nudity (female mostly, and usually only in still pictures). Brothels are central to the plots of some episodes.

There is not much in terms of negative theological themes. There are small references to Shinto and Buddhism, I recall. And there is one episode where the trio work in a shrine for a monk.

There's drinking of sake (a Japanese alcoholic drink) and on at least one occasion, the main characters get drunk. There is also lots of swearing and crude jokes.

While carrying a mature rating, Samurai Champloo still presents a great story. In some ways, it expresses reality and how we must all face the consequences of our actions. And everyone once in a blue moon, we can overcome those consequences and live to fight another day.